Hertzl Benyamini files plans for 22 units in Prospect Lefferts Gardens, former bankruptcy parcel

Hertzl Benyamini submitted a new building construction project for a 22-unit, 17,189-square-foot residential (R-2) building at 604 Flatbush Avenue in Prospect Lefferts Gardens, Brooklyn. The plan was filed on April 9, 2026. It calls for the construction of a 61-foot-tall, six-story building and was filed with the New York City Department of Buildings under job number B01353092. The project is described in the filing as: Proposed New 6-Story Residential Building.. The applicant is the Registered Architect Gladmore Mwandiambira of Baobab Architects P.C.

• Maria Bourne’s bankrupt entity lost 604 Flatbush Avenue and 604A Flatbush Avenue, in Prospect Lefferts Gardens, Brooklyn, in a bankruptcy at a price of $2.7 million to Robert Ainehsazan on July 09, 2025.

• Maria Bourne on May 16, 2024, filed a $3.6 million bankruptcy 1-24-42068-ess for 604 Flatbush Avenue.

• NuBridge Commercial Lending filed a $3.6 million pre-foreclosure 533752/2022 on November 17, 2022, against Maria Bourne at 604 Flatbush Avenue.

The neighborhood

In Prospect Lefferts Gardens, The majority, or 55 percent of the 11.1 million square feet of commercial built space are elevator buildings, with walkup buildings next occupying 24 percent of the space. In sales, Prospect Lefferts Gardens has near average sales volume among other neighborhoods with $140 million in sales volume in the last two years and is the 35th highest in Brooklyn. For development, Prospect Lefferts Gardens has near average amount of major developments among other neighborhoods and is the 29th highest in Brooklyn. It had 417,649 square feet of commercial and multi-family construction under development in the last two years, which represents 4 percent of the neighborhood’s built space.

The block

On this tax block, PincusCo has identified the owners of 27 of the 60 commercial properties representing 1,926,291 square feet of the 2,373,145 square feet. The largest owner is City Of New York, followed by Eric Miller and then Yellow Jacket Ventures.
On the tax block, there was one new building construction project filed totaling 14,079 square feet. It is a 22-unit, 14,079 square-foot residential (R-2) building submitted by Hertzl Benyamini and filed by Hertzl Benyamini with plans filed April 9, 2026 and it has not been permitted yet.

The Owner

The PincusCo database currently indicates that Robert Ainehsazan owned at least three commercial properties with 10 residential units in New York City with 12,642 square feet and a city-determined market value of $2.8 million. (Market value is typically about 50% of actual value.) Within the portfolio, the bulk, or 64 percent of the 12,642 square feet of built space are mixed-use properties, with walkup properties next occupying 36 percent of the space. They are all located in Brooklyn.

The surrounding

Within a 400-foot radius of 604 FLATBUSH AVENUE, PincusCo identified three commercial real estate items of interests occurred over the past 24 months.
One of those three items was a sale which Yellow Jacket Ventures bought the 54,000-square-foot, 68-unit rental (D7) on 620 Flatbush Avenue for $8.2 million from Jonas Equities on March 24, 2025.
Of those three items, two were loans above $5 million totaling $24.3 million. The most recent of the two was Moshe Drizin in which borrowed $18.5 million from JPMorgan Chase secured by the 315,184-square-foot, 224-unit rental (D3) on 580 Flatbush Avenue and one other property on June 5, 2025.

Direct link to the property ACRIS page and link to DOB NOW portal.